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  1. #1

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    May 2009
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    Different piston sizes OK?

    I have a 94 SLT 750 that I burned the center cylinder on. When I tore it down, I noticed that the cylinders had already been bored to 1mm over. I need to get this thing running, but money is really tight. I know it is not the most recommended thing in the world, but how bad would it be to replace the center cylinder with a stock or .25mm over? This is definitely not a performance machine, it's just a family fun runner at the lake.

    Thanks.


  2. #2
    Tony's Avatar
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    I'm sure someone somewhere has done it, but I wouldn't recommend it. I can't say for sure if it would give you any trouble but if money is tight keep in mind it's cheaper to do it right the first time than doing it twice.

  3. #3
    bnasty's Avatar
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    Quote Originally Posted by Tony View Post
    I'm sure someone somewhere has done it, but I wouldn't recommend it. I can't say for sure if it would give you any trouble but if money is tight keep in mind it's cheaper to do it right the first time than doing it twice.
    +1. I did it all wrong the first time, and now im paying for it!!

  4. #4

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    Check with John Zigler he probrably could sell you a nice used one with a good piston and all .

  5. #5
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Quote Originally Posted by 785 lugs View Post
    Check with John Zigler he probrably could sell you a nice used one with a good piston and all .
    That's a good idea.

    You'll need to figure out what caused the failure, or it'll happen again.

    Pistons don't just hole because ......

  6. #6

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    I already figured that out. These skis had sat for a couple of years before I bought them, and I was too cheap to rebuild the carbs. The center cylinder ran way too lean and detonation damage was severe, but no hole. The ski was still running when we put it on the trailer. It just wouldn't start the next morning as the crankcase was full of gas.

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